Intellij automatically generates read-only debug options that include dt_socket but we are using this ancient jvm that "may" only support dt_shmem on windows. Just want to know for sure that it will never work with the version of intellij we are using.
rtfm says https://www.ibm.com/docs/en/sdk-java-technology/8?topic=applications-debugging-java
Secondary followup question. Is it possible to run websphere 8.5.5.19 on the oracle or openjdk jvm in a non-production environment.
dt_socket works on Windows as well. The documentation is a bit misleading in that dt_shmem is only an option on Windows.
For the record, that probably isn't an ancient JVM in there unless it just hasn't been updated. If you updated the JDK when you updated WAS to 8.5.5.19, it would have a version of Eclipse OpenJ9 from about a year ago (and Eclipse OpenJ9 is single source across all JDK releases, so it includes all the same JVM goodies as in recent JDK releases).